Beater roll



Sept. 8, 1925.

w. WERNER BEATER ROLL Filed April 28, 1925 ATTORNEY.

INVENTOR. BY M fl/WW Patented Sept. 8, 1925.

UNITED STATES PATENT QFFiCE.

WALTER WERNER, OF HOOSICK FALLS, NEVJ YORK, ASSIGNOB, TO THE NOBLE 6cVIOOD MACHINE 00., 0F HOO'SICK FALLS, NEiV YORK, A CORPORATION OF NEWYORK.

BEA'IER ROLL.

Application filed April 28, 1925.

To all whom it may concern:

Be it known that I, VJALTER WVERNER, citizen of the United States,residing at l-Ioosick Falls, in the county of Rensselaer and State ofNew York, have invented certain new and useful Improvements in BeaterRolls, of which the following is a specification.

This invention relates to beater rolls for beating engines, andparticularly to the formation of the heater-bar and the bar-receivingrecesses in the roll heads into which the bars are inserted and lockedby means of locking wedges, so as to form what are known as bandlessrolls.

In order to produce a satisfactorily secure attachment of the beaterbars to the heads of the rolls, and to insure proper alignment of thebars when locked in place, it has been the quite general practice tomachine a part or all of the bar-receiving recesses in the roll heads inorder that the recesses in one head might coincide exactly with therecesses in the other, so that when the bars are locked in place thereinthey will lie in exact alignment. The proper alignment of the beaterbars is very desirable, and in practice it has heretofore been found tobe extremely difficult to obtain the desired alignment of the bars whenunfinished cast barreceiving recesses were used, due to the variouscauses which contribute toward inaccuracies in heavy castings such asare used to make the roll heads.

The object of this invention is to make feasible the use of castbar-receiving recesses without the necessity of finishing the same, andat the same time make possible the proper aligning of the bars and thesecuring of the same in place by means of wedges, regardless of suchinaccuracies in the heads as cannot be overcome by ordinary carefulmoulding of the same, and to make feasible he substantially perfectalignment of the bars in both the horizontal and vertical planes withoutthe necessity of machine work on the heads other than the boring for theshaft and the turning of the rims thereof.

I accomplish my objects by making use of peculiarly shaped beater bars,bar-receiving recesses, and locking wedges, and by inserting the wedgesat a point which lies between a pair of accurately surfaced Serial- No.26,538.

spaced bearing points formed by the turning of the rim of the head ofthe roll.

My improvements are clearly shown in the accompanying drawings, inwhich:

Fig. 1 is a longitudinal section through one side of a head of myimproved beater B the beater bar; and WR, l/VL, the right and left handlocking wedges.

My improved beater bar is rolled to exact form from any suitablematerial, usually steel, and preferably has a cross sectionsubstantially as illustrated. Lengthwise of each side of the bar B areformed spaced parallel ribs 525 and b7); the ribs 1)?) lying along thelower or inner edge of the bar, that edge of which is adapted to seatagainst a finished annular shoulder or ledge A on the head A, when theunder side of the rib M is seated against the finished surface A of therim of the head. The ends of the bar may be notched out (on the lowerside) up to the ribs bt, leaving an overhang adapted to contact with thesurface of the roll head rim which lies outside of the end of therecess, R.

The bar-receiving recesses in the head have a cross-sectionsubstantially as illustrated in the drawings. The bottom of the recessesare substantially flat and rectangular in plan and lie below the levelof the top of the annular ledge A the side walls retreat for most oftheir height so that the recesses flare toward both the top and sideentrances thereto, the upper portions of the side walls drawing towardeach other so that side ledges A are formed along the top entrance, theunder side of" said ledges tapering up and towards the side entrance tothe recess. The under sides of the ledges A are adapted to contact withthe upper side or edge of the locking wedges when they are driven toplace.

7 At the head end of this irregular shaped side is a side projectingcross rib N", between which rib and theinner face of the rim of the heada pointed tool may be driven so as to loosen the wedge when it isdesired to withdraw it for the purpose of freeing the bar so that it maybe removed from the roll.

The bars having been lowered into the bar receiving recesses in the rollhead, are locked in place by driving a wedge along each side thereof.The bottom of the wedges contacting with the upper side of the ribs bi),the tops with the tapered under side of the ledges A Should the pair ofbar-receiving recesses of the pair of heads not lie in exact alignment,the beater bar may still be locked in alignment by driving one wedgefurther than the other, or by using wedges of unequal thickness and ifnecessary reversing the position of the thick and thin wedges at theother end of the bar.

By forming the ribs in, along the sides of the beater bar at a point inits width where the under side of them will contact with the accuratesurface A when the bottom edge of the bar contacts with the accuratesurface A I provide support for the bar across the whole of the rim ofthe head and so prevent the driving of the locking wedges from drawingdown the ends of the bars and causing the centers to arch, as at timeshappens with some present types of roll construction.

The usual shaft, intermediate bar sup ports, and wood filler strips areto be used in this roll.

In this improved beater roll the beater bars are securely and detachablyheld accurately in place without the necessity of finishing thebar-receiving recesses in the heads. The only machining which isactually nec essary is the boring for the shaft and the turning of thesurfaces A and A the rolls being thus very inexpensive to produce and noloss of accurate alignment of the bars is experienced, for by using awedge on each side of the bar I am able to compensate for anyinaccuracies in the alignment of the cast recesses which cannot beeliminated by ordinary careful casting. In addition, I have insured thebars against arching due to the drawing power of the locking wedges.

I claim:

1. In a heater roll: the combination of a pair of heads mounted on ashaft, each head having a ledge formed on the inner side thereof andbelow its rim, and a series of bar-receiving recesses spaced about itscircumference the side walls of said recesses flaring apart toward boththe top and side openings thereto but drawing toward each other at thetop to form abutments which restrict the width of the top opening;beater bars fitting loosely in said recesses and having a ribformedalong each side at the lower edge thereof, and a rib parallel to saidfirst mentioned ribs and adapted to contact with the top of the rim ofthe head when the bottom edge of said bar is in con tact with the topside of said ledge; and a pair of locking wedges one on each side ofsaid bar and co-acting therewith to lock same against lateraldisplacement, the top of one of said wedges contacting with the underside of one of said abutments and the lower side of said wedgecontacting with the upper side of one of the ribs along the lower edgeof said bar so that the driving of the wedge will force said bar to aseat and lock it against vertical displacement.

2. A head for a beater roll, having an annular ledge formed on the innerside thereof, a series of circumferentially spaced bar-receivingrecesses formed in and opening through the top and inner side of saidrim, the bottom of saidrecesses lying below the top of said ledge, theside walls of said recesses flaring apart as they approach both the topand side openings thereto the tops thereof drawing toward each other andforming a pair of rib-like abutments which restrict the top opening tothe recess and the under sides of which taper upwardly as the endopening is approached.

3. A beater bar for a beater roll comprising: a bar of metal having alongitudinal rib formed on each side thereof and adapted to contact withthe surface of the rim of the roll head when the bar is in place thereinand the bottom edge of the bar is against its seat, the inner half ofsaid bar tapered from said rib toward the inner edge of the bar andhaving a rib formed along said inner edge on each side of said bar.

In testimony whereof I have affixed my signature.

WALTER WERNER

